package review;

public class ManTest {
	// 阶乘

	public static void main(String[] args) {
		KindMan man = new KindMan("唐玄奘", 39);
		man.selfIntro();
		KindMan m2 = man;
		man = new KindMan("雷锋", 29);

		System.out.println(man);// "null"
		m2.selfIntro();
//		String o1 = null, o2 = null;
//		String o3 = o1 + o2;
//		System.out.println(o3.length());
	}// 内存分布图...
}
